Diameter Pay Raises $10 Million to Expand Stablecoin Payment Infrastructure

Stablecoins can move dollar value globally around the clock, but institutions still need regulated links to bank accounts, payment networks and compliance controls. Founded in 2023 and based in Jersey City, New Jersey, Diameter Pay offers banks, fintech companies and digital-asset exchanges a single API for U.S. dollar virtual accounts, domestic and cross-border payments, and stablecoin on- and off-ramps. The company positions its platform as connective infrastructure between traditional banking and digital-dollar rails.

Diameter Pay said on Sept. 3, 2026, that it raised $10 million in a Series A equity round co-led by CMT Digital and Lightspeed Faction. The process began in April and closed in July in one tranche, marking its first outside financing after being bootstrapped. The company said it has processed more than $10 billion in payments in 2026 and serves over 10,000 end users. Proceeds will expand banking and payment capabilities, stablecoin and foreign-exchange infrastructure, technology and compliance tools.